Holley 850 Street HP Baseplate

[6.50camaro]

I have a Holley 850 Street HP Carb ,this has 1.562 venturi's and a 1.687 throttle baseplate . I removed the baseplate and measured the bottom of the main body because looking down it appeared that the baseplate was chamfered to meet the main body . Sure enough the body measures 1.74x .The baseplate has a chamfer at the top to allow the larger main body to transition into the 1.687 base plate . My question is can I use a 1.750 baseplate without having to do any other mods other the tuning for increased airflow . Thanks Dan

[BradH]

It should work fine with the 1.75 base plate. The 1.56 v with the 1.68 throttle is the original 830 configuration.

It's Holley playing the name game again with the Street HP carbs by calling the 1.56 x 1.68 an 850 and the 1.56 x 1.75 a 950.

[Duh]

Really??? Pictures please.

[BradH]

Couldn't find a picture. The 830 base plate is a 1.75 top that tapers down to a 1.68 throttle plate to fit the old NASCAR rule. The main body is a 1.56 x 1.75 piece common to the traditional 850. It was/is a Band-Aid design, at best.

[6.50camaro]

I tried to upload a couple photos but the files were to big and resizing them is way beyond my computer skills. Dan

[6.50camaro]

Hope this works its the only pic that the file is not to big .Dan

[Duh]

Thanks for the pics. I never worked with an 830. Don't think I ever will now.

[6.50camaro]